A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: Caerdydd; Cardiff; Abertawe (Dn); Swansea (E); Castell-nedd; Neath.
Exit destinations: Pontardawe; Abertawe (G); Swansea (N); A4067.
Junction number: 45.
Just after this junction, we cross the River Tawe, which gives Swansea its Welsh name. It's theoretically possible there will be swans on it, which give Swansea its English name.